Fact is, there were multiple discussions about this topic ( And nope, I won't give you them as it's not my job nor will to help you out) and all of them had same answer (what answer ? Go and figure it out). As a regular person would do on civilised forums is to make a research before posting so he doesn't make a fool out of himself.

As you have skipped that process you shall receive proper answers. I encourage you for the sake of your future internet posting journeys to use 'search' option.